Android Studio 2.2 Stuck at Building Gradle Project Info on importing existing project
There is downloading of Gradle going on at the background. Just wait for it to finish.
Just Remove Gradle files from your project folder and retry.
Hope this will help.
I also had the problem.
I downloaded the gradle 3.5 binary distribution zip file, deleted the gradle folder from my project, then went to settings of Android Studio, checked "Offline work", used "Use local gradle distribution" and set the path of unzipped gradle folderon the "Gradle home" and "Service directory path" text fields.
Then I tried to open the project with Android Studio 2.3.
Then a message is shown and I pressed cancel to manually configure the gradle, then I located the unzipped gradle folder again. This solved my problem.